Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Polyamine anabolic/catabolic regulation along the woody grapevine plant axis
Journal of Plant Physiology, Volume 166, No. 14, Year 2009
Notification
URL copied to clipboard!
Description
The distribution of the endogenous PA fractions throughout the entire perennial woody grapevine (Vitis vinifera L.) plant was studied, along with the expression profiles of the PA anabolic and catabolic genes and their substrates and secondary metabolites. Putrescine fractions increased with increasing leaf age, although the expression of its biosynthetic enzymes Arg and Orn decarboxylases decreased. Orn transport from young organs dramatically enhanced putrescine biosynthesis in older tissues, via the Orn decarboxylase pathway. S-adenosylmethionine decarboxylase and spermidine synthase genes were down-regulated during development in a tissue/organ-specific manner, as were spermidine and spermine levels. In contrast, amine oxidases, peroxidases and phenolics increased from the youngest to the fully developed vascular tissues; they also increased from the peripheral regions of leaves to the petioles. Hydrogen peroxide generated by amine oxidases accumulated for the covalent linkage of proteins via peroxidases during lignification. These results could be valuable for addressing further questions on the role of PAs in plant development. © 2009 Elsevier GmbH. All rights reserved.
Authors & Co-Authors
Paschalidis, Konstantinos A.
Greece, Rethymnon
University of Crete
Moschou, Panagiotis N.
Greece, Rethymnon
University of Crete
Toumi, Imen
Tunisia, Hamam Lif
Centre de Biotechnologie de Borj Cédria
Roubelakis-Angelakis, K. A.
Greece, Rethymnon
University of Crete
Statistics
Citations: 24
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1016/j.jplph.2009.03.013
ISSN:
01761617